How to close current tab in a browser window fire fox version 26

How to close current tab in a browser window? the below code is not working in firefox version 26. It is working properly in chrome version 32.

<html>
<head>
<script language="javascript" type="text/javascript">
function closeWindow() {
window.open('','_parent','');
window.close();
}
</script>
</head>
<body>
<a href="javascript:closeWindow();">Close Window</a>
</body>
</html>
RockingAsked:
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Angelp1ayConnect With a Mentor Commented:
Here's the official documentation:
https://developer.mozilla.org/en-US/docs/Web/API/window.close?redirectlocale=en-US&redirectslug=DOM%2Fwindow.close
This method is only allowed to be called for windows that were opened by a script using the window.open method. If the window was not opened by a script, the following error appears in the JavaScript Console: Scripts may not close windows that were not opened by script.

More of privilege escalation, quoted bit is probably important:
http://www-archive.mozilla.org/projects/security/components/signed-scripts.html#privs
Privileges are granted only in the scope of the requesting function. This scope includes any functions called by the requesting function. When the script leaves the requesting function, privileges no longer apply.

...and here's an interesting bit of discussion:
http://forums.mozillazine.org/viewtopic.php?t=527665
You might be able to request elevated privileges to close the window; that would be at the user's discretion. However, why do you need to close the window if your application did not open it?
Apparently, a loophole has been closed. :-D
0
 
Angelp1ayCommented:
According to this thread on the Mozilla support forum you can only close windows you opened (and hence own):
https://support.mozilla.org/en-US/questions/966137
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Angelp1ayCommented:
This should work (but will prompt the user since you're asking for increased permissions:
function closeWindow() { 
    if (window.netscape) {netscape.security.PrivilegeManager.enablePrivilege("UniversalBrowserWrite");}
    window.open('','_parent',''); 
    window.close(); 
}

Open in new window

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GaryCommented:
JavaScript is supposed to only be allowed to close windows that it opened itself
There is no point relying on hacky workarounds that will be probably stop working in the near future.
The above hack will not work in modern FF versions.
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dimmergeekConnect With a Mentor Commented:
Mozilla Firefox doesn't support any scripts to close the current tab/window.
0
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